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MaryBea

white patch on rendered image

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Would anyone have an idea what is causing this white area in the final rendering? It doesn't exist as an object and doesn't show up in openGL or in wireframe. When I export the rendered image the white area changes shape and position in the exported image.

Thanks for any help.

Bea

VW Landmark & Renderworks 2012

iMac OS 10.7.5

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What are your computer specs. i.e.. graphics card and RAM etc.?

Do you have any objects or sub objects in the None class?

If you want you can post the file and I'll have a look. (Switch to Full Reply Screen to do this (at the bottom)).

Edited by Vincent C

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Many thanks for the reply.

The computer is an iMac 27", mid 2010

processor 3.2 GHz intel core 13

memory 4 GB 1333 MHz DDR3

graphics ATI Radeon HD 5670 512 MB

software Mac OS X Lion 10.7.5 (11G63)

All objects apart from the roofs are in the None class.

Bea

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All objects apart from the roofs are in the None class.

Try changing everything to other classes.....the none class can cause problems in rendering.

(I tried rendering from a couple of different angles but don't get this behavior (on the other hand I have 8 Gb RAM and a different graphics card)).

Edited by Vincent C

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Changing the classes hasn't made any difference. Here are two images - when I zoom in or out, keeping the same perspective, the ghost shape moves...

Bea

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Is it possible that you have planar objects in the same plane as the textures? And you are using Indirect Lighting? If so, in the viewport, turn off the display of Layer Plane objects and re-render. That should fix it.

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Hmm - just looked at the images and I can see the symptoms are different to what I described above, and I don't think you are using indirect lighting? So, probably a rogue object. Is this a viewport? If not, try making a viewport and carefully selecting classes and layers (one by one if necessary), but also turn off the planar objects setting as it could be a 2D layer plane object floating somewhere.

Hope that helps

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Thanks very much for your ideas. I deleted all the objects, one by one, and found that once all the 2d locus points were deleted the white shape disappeared. Not sure why this happened.

Bea

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Going back to this topic because a similar thing has happened today. The picture attached (final quality renderworks) shows a light grey rectangle dotted with white circles. It doesn't exist as an object in the VW drawing. When I delete all the 2d locus points it disappears. Any ideas?

Bea

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I have seen this circle-pattern behavior when the drawing includes planar geometry (flat, not-really 3d geometry on a layer plane) when light is cast on it.

If you create a viewport and uncheck Display Planar Geometry from the viewports Object Info Palette, then render the viewport, do you still see the circles?

Edited by JimW

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No, the circles aren't in the rendered viewport. Have you an idea what the planar geometry in the drawing could be and whether it could have been created by the 2d locus points?

Thanks.

Bea

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To confirm, you can use Select Similar to select all the 2D loci and class them together, then turn that class of and re-render.

Otherwise, it is usually rectangles, circles, polygons, lines or other non-solid 3D geometry causing it.

Viewports (set as described earlier) are another way around having to find the geometry and remove it. However this issue has been submitted.

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No, the circles aren't in the rendered viewport. Have you an idea what the planar geometry in the drawing could be and whether it could have been created by the 2d locus points?

Thanks.

Bea

Did you use Slab Tool for your floors ?

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